21120154

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{379}}^1$

素因数の和:558

約数の個数: 32

約数和(自身を含む): 36936000

約数和(自身を除く): 15815846

約数列:

[1, 2, 11, 17, 22, 34, 149, 187, 298, 374, 379, 758, 1639, 2533, 3278, 4169, 5066, 6443, 8338, 12886, 27863, 55726, 56471, 70873, 112942, 141746, 621181, 960007, 1242362, 1920014, 10560077, 21120154]

約数ペア:

[(1, 21120154), (2, 10560077), (11, 1920014), (17, 1242362), (22, 960007), (34, 621181), (149, 141746), (187, 112942), (298, 70873), (374, 56471), (379, 55726), (758, 27863), (1639, 12886), (2533, 8338), (3278, 6443), (4169, 5066)]